Help!

Ladies i really need your help... My last period was 15th feb, and im normally 29 days apart... So im confused as to why i have 2 positive results in front of me... The first positive i got was 1st of march, then today i took a test and its positive, i mean im happy with the results... I just dont want to read too much into them as i have not missed a period... My period isnt due until the 15th of this month... Apparently my due date would be 22nd november and im 2 weeks 2 days pregnant... But im confused though any thoughts?